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CVE-2026-90990

🗓️ 22 Sep 2026 10:43:28Reported by CheckmkType 
cve
 cve
🔗 web.nvd.nist.gov👁 32 Views

Authenticated Livestatus injection in Checkmk below 2.5.0p14 bypasses visibility restrictions.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-90990
22 Sep 202611:55
–circl
cvelist
Cvelist
CVE-2026-90990 Livestatus injection via monitoring filter values
22 Sep 202610:43
–cvelist
euvd
EUVD
EUVD-2026-84350
22 Sep 202610:43
–euvd
nvd
NVD
CVE-2026-90990
22 Sep 202611:17
–nvd
ptsecurity
Positive Technologies
PT-2026-96699
22 Sep 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-90990: Improper Neutralization of CRLF Sequences
22 Sep 202600:00
–rapid7
vulnrichment
Vulnrichment
CVE-2026-90990 Livestatus injection via monitoring filter values
22 Sep 202610:43
–vulnrichment
CNA
Node
checkmkcheckmkRange2.5.0–2.5.0p14
[
  {
    "defaultStatus": "unaffected",
    "product": "Checkmk",
    "vendor": "Checkmk GmbH",
    "versions": [
      {
        "lessThan": "2.5.0p14",
        "status": "affected",
        "version": "2.5.0",
        "versionType": "semver"
      }
    ]
  }
]

Data

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22 Sep 2026 14:17Current
5.8Medium risk
Vulners AI Score5.8
CVSS 45.3
EPSS0.00421
SSVC
32